UserService for spies

UserService.java

public class UserService {

	private UserDAO userDAO;
	private EmailService emailService;

	public UserService(UserDAO userDAO, EmailService emailService) {
		this.userDAO = userDAO;
		this.emailService = emailService;
	}

	public User findOrCreateWith(Email email) {
		User user = userDAO.findUserBy(email);

		if (user.isEmpty()) {
			user = userDAO.createWith(email);
			emailService.sendEmailTo(user);
		}
		return user;
	}

}